So Dec 7 2016 ranger slight unnerf was great, but now a new issue: energy's always depleted even WITH 5% reduced ability cost.

It's an outdated mechanic that has been long overdue to be done with in comparison to caster regen etc. There is no getting around it without running Rng/Sab.

The "revamp" of Ace Shot exacerbates an already horrific energy starvation, even with running Sab if you use Ace Shot everytime it procs (with the recent bump to proc rate for it) you will still be energy starved in short order.